Product Overview ZW10-12XDG / 630-20-pressure dual power each switch device (hereinafter referred to as the device) is composed of a high-voltage vacuum circuit breakers and intelligent control of two parts. Suitable for AC 50Hz, rated voltage 12KV, rated current up to 630A dual power supply system, when the way of a power outage or voltage automatic switch to the other normal power supply, a reliable guarantee continuity of supply. Both short circuit and over-current protection interlock function effectively avoid unnecessary re-load power failure impact. In the normal power supply fails, the switching device can be completed with the automatic backup power supply switching, in order to ensure reliability and safety. Also can choose to switch between two power required load. Especially for important places not allowed off as important to ensure a continuous supply of electrical control device. For a new generation of innovative design, perfect performance, secure, reliable, high degree of automation, using a wide range of products to automatically switch from the vote since the complex-type dual power. Products are designed to ensure that the two fully isolated high voltage power supply, while using sound and reliable mechanical and electrical chain, it has a very high safety and reliability. The product is suitable for power supply reliability and safety requirements more power users want dual power, control and protection as dual power supply system settings. Our products are widely used in the oil, mining, metallurgy, chemical industry, railways, telecommunications, machinery and other 10kV distribution lines, industrial and mining enterprises 10kV line. The main technical parameters No. Name Unit Parameter 1 Rated voltage kV 12 2 maximum working voltage kV 12 3 Rated current A 630 4 rated load short circuit breaking current kA 20 5 rated short-circuit current (peak) kA 50 6 kA rated peak withstand current 507 1min rated short time withstand current kA 20 8 rated power frequency withstand voltage insulation level (dry) kV 42 Lightning impulse withstand voltage (peak) Rated operating sequence 759 combined points -180S- points -0.3S- 10 combined points Mechanical life 1,000,011 times the rated short-circuit breaking current switching times times 3012 operating mechanism rated switch voltage V 220 13 Operating mechanism rated gate voltage V 220 14 contact opening distance mm 9 ± 1 15 mm 3 16 Three-phase overtravel points and closing different period ms ≤2 17 Contact closing bounce time ms ≤2 18 Average opening speed m / s 1.0 ± 0.2 19 Average closing speed m / s 0.7 ± 0.15 20 Opening time s maximum operating voltage 0.03-0.06 s 0.025-0.05 22 21 Closing time for each phase of the main circuit resistance μΩ ≤180 23 static and dynamic contact permission attrition cumulative thickness 0.015-0.05 mm 3 Notes under the minimum operating voltage: the user if there are special requirements, in consultation with our factory After OK.